tty: serial: amba-pl011: unindent pl011_console_get_options function body

The whole function body is encapsulated inside an if-condition. Reverse
the if logic and early return to remove one indentation level.

Also turn two nested ifs into a single one at the end of the function.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20231207-mbly-uart-v6-7-e384afa5e78c@bootlin.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/amba-pl011.c

@@ -2363,9 +2363,11 @@ pl011_console_write(struct console *co, const char *s, unsigned int count)
 static void pl011_console_get_options(struct uart_amba_port *uap, int *baud,
 				      int *parity, int *bits)
 {
-	if (pl011_read(uap, REG_CR) & UART01x_CR_UARTEN) {
 	unsigned int lcr_h, ibrd, fbrd;
 
+	if (!(pl011_read(uap, REG_CR) & UART01x_CR_UARTEN))
+		return;
+
 	lcr_h = pl011_read(uap, REG_LCRH_TX);
 
 	*parity = 'n';
@@ -2386,12 +2388,9 @@ static void pl011_console_get_options(struct uart_amba_port *uap, int *baud,
 
 	*baud = uap->port.uartclk * 4 / (64 * ibrd + fbrd);
 
-		if (uap->vendor->oversampling) {
-			if (pl011_read(uap, REG_CR)
-				  & ST_UART011_CR_OVSFACT)
+	if (uap->vendor->oversampling &&
+	    (pl011_read(uap, REG_CR) & ST_UART011_CR_OVSFACT))
 		*baud *= 2;
-		}
-	}
 }
 
 static int pl011_console_setup(struct console *co, char *options)